In this article, we briefly present the results of a multifaceted investigation of the book Ce que le jour doit à la nuit. We examine the effects produced on the novel by the transgression of multiple frontiers: identity, geographic, interlinguistic, translation, semiotic, etc. These are frontiers that both the writer, Yasmina Khadra, and her novel transgress. A necessary look at the circumstances in which the book was created will allow us to survey the types of frontier transgression: of the self, of the civilian and artistic identity, in order to concentrate on the crossing of interlinguistic frontiers (the translation into Romanian of the novel Ce que le jour doit à la nuit in this case), semiotic (its cinema adaptation and its subtitles).